| Business | Phone |
| Al Lamb & Assoc 7496 Digby Grn, Alexandria 22315 | (703) 313-8777 |
| Alexant Systems Corporation 5568 General Washington Drive, Suite A218, Alexandria 22304 | (703) 658-0178 |
| Cable Express Alexandria 22312 | (703) 642-2253 |
| Charles E Day & Assoc 211 N Union St 100, Alexandria 22314 | (703) 739-0446 |
| Tadiran Telecom 1650 King St, Alexandria 22314 | (703) 739-4140 |
| Telememo 320 King St, Alexandria 22314 | (703) 548-6950 |
| New Line 1417 N Van Dorn St, Alexandria 22304 | (703) 799-6775 |
| Mountain Union Telecom 301 N Fairfax St 101, Alexandria 22314 | (703) 535-3009 |
| Invertix 224 S Alfred St, Alexandria 22314 | (703) 739-3444 |